Cosmos and Cosmogony I Cosmos and Cosmogony I A redshift value, Big Bang theory, Hubble’s Law, Hubble constant, cosmic microwave background, Cosmic inflation, Hubble’s Law, multiverse, Dark energy 1 / 10 A galaxy is observed to have a redshift value of 0.01. What does this indicate? The galaxy is moving away from Earth. The galaxy is moving closer to Earth. The galaxy is stationary relative to Earth. The galaxy is rotating rapidly. 2 / 10 According to the Big Bang theory, approximately how old is the universe? 4.6 billion years 13.8 billion years 1.2 trillion years 100 million years 3 / 10 If a galaxy is 10 megaparsecs away, how fast is it receding (assuming Hubble constant = 70 km/s/Mpc)? 70 km/s 140 km/s 700 km/s 1000 km/s 4 / 10 If the Hubble constant is 70 km/s/Mpc, what does it represent? The speed of light The rate of cosmic expansion The gravitational force of galaxies The lifetime of stars 5 / 10 The observable universe is estimated to have a radius of approximately how many light-years? 46 billion light-years 13.8 billion light-years 100 billion light-years 200 million light-years 6 / 10 What does cosmic microwave background radiation represent? Heat from stars Remnant heat from the Big Bang Light from nearby galaxies Energy from quasars 7 / 10 What does the term “cosmic inflation” refer to? Gradual cooling of the universe Collapse of black holes Formation of stars and galaxies Rapid expansion of the universe after the Big Bang 8 / 10 What is Hubble’s Law? Relationship between a star’s brightness and its distance Relationship between gravity and mass Relationship between a planet’s orbit and its velocity Relationship between a galaxy’s redshift and its distance 9 / 10 What is the concept of the “multiverse”? The oscillating universe theory The existence of multiple universes The collapse of the universe The end of time in the cosmos 10 / 10 What is the estimated percentage of dark energy in the universe? 5% 27% 68% 90% Your score is By WordPress Quiz plugin
